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// $Id: G4HETCFragment.hh,v 1.3 2010/08/28 15:16:55 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03-ref-09 $
//
// by V. Lara
//
// Modified:  
// 20.08.2010 V.Ivanchenko added G4Pow and G4PreCompoundParameters pointers
//                         use int Z and A and cleanup

#ifndef G4HETCFragment_h
#define G4HETCFragment_h 1

#include "G4VPreCompoundFragment.hh"
#include "Randomize.hh"

class G4HETCFragment : public G4VPreCompoundFragment
{
public:  

  G4HETCFragment(const G4ParticleDefinition*,
		 G4VCoulombBarrier * aCoulombBarrier);
  
  virtual ~G4HETCFragment();

  G4double CalcEmissionProbability(const G4Fragment & aFragment);

protected:

  virtual G4double K(const G4Fragment & aFragment) = 0;
    
  virtual G4double GetSpinFactor() = 0;
  virtual G4double GetAlpha() = 0;
  virtual G4double GetBeta() = 0;

  inline G4double BetaRand(const G4int N, const G4int L) const;
  
private:

  // This method performs integration for probability function over 
  // fragment kinetic energy
  G4double IntegrateEmissionProbability(const G4double & Low, 
					const G4double & Up, 
					const G4Fragment & aFragment);	

  G4HETCFragment();
  G4HETCFragment(const G4HETCFragment &right);
  const G4HETCFragment& 
  operator= (const G4HETCFragment &right);  
  G4int operator==(const G4HETCFragment &right) const;
  G4int operator!=(const G4HETCFragment &right) const;

  G4double r2norm;
};

inline G4double G4HETCFragment::
BetaRand(const G4int N, const G4int L) const
{
  G4double Y1 = CLHEP::RandGamma::shoot(N,1);
  G4double Y2 = CLHEP::RandGamma::shoot(L,1);
  
  return Y1/(Y1+Y2);
}

#endif